/****************************************************************************** * $Id: ogravcbinlayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $ * * Project:  OGR * Purpose:  Implements OGRAVCBinLayer class. * Author:   Frank Warmerdam, warmerdam@pobox.com * ****************************************************************************** * Copyright (c) 2002, Frank Warmerdam <warmerdam@pobox.com> * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER * DEALINGS IN THE SOFTWARE. ****************************************************************************/#include "ogr_avc.h"#include "ogr_api.h"#include "cpl_conv.h"#include "cpl_string.h"CPL_CVSID("$Id: ogravcbinlayer.cpp 10646 2007-01-18 02:38:10Z warmerdam $");/************************************************************************//*                           OGRAVCBinLayer()                           *//************************************************************************/OGRAVCBinLayer::OGRAVCBinLayer( OGRAVCBinDataSource *poDSIn,                                AVCE00Section *psSectionIn )        : OGRAVCLayer( psSectionIn->eType, poDSIn ){    psSection = psSectionIn;    hFile = NULL;    poArcLayer = NULL;    bNeedReset = FALSE;    nNextFID = 1;    hTable = NULL;    nTableBaseField = -1;    nTableAttrIndex = -1;    SetupFeatureDefinition( psSection->pszName );        szTableName[0] = '\0';    if( psSection->eType == AVCFilePAL )        sprintf( szTableName, "%s.PAT", poDS->GetCoverageName() );    else if( psSection->eType == AVCFileRPL )        sprintf( szTableName, "%s.PAT%s", poDS->GetCoverageName(),                 psSectionIn->pszName );    else if( psSection->eType == AVCFileARC )        sprintf( szTableName, "%s.AAT", poDS->GetCoverageName() );    else if( psSection->eType == AVCFileLAB )    {        AVCE00ReadPtr psInfo = ((OGRAVCBinDataSource *) poDS)->GetInfo();        sprintf( szTableName, "%s.PAT", poDS->GetCoverageName() );        for( int iSection = 0; iSection < psInfo->numSections; iSection++ )        {            if( psInfo->pasSections[iSection].eType == AVCFilePAL )                nTableAttrIndex = poFeatureDefn->GetFieldIndex( "PolyId" );        }    }    CheckSetupTable();}/************************************************************************//*                          ~OGRAVCBinLayer()                           *//************************************************************************/OGRAVCBinLayer::~OGRAVCBinLayer(){    ResetReading();}/************************************************************************//*                            ResetReading()                            *//************************************************************************/void OGRAVCBinLayer::ResetReading(){    if( hFile != NULL )    {        AVCBinReadClose( hFile );        hFile = NULL;    }    bNeedReset = FALSE;    nNextFID = 1;    if( hTable != NULL )    {        AVCBinReadClose( hTable );        hTable = NULL;    }}/************************************************************************//*                             GetFeature()                             *//************************************************************************/OGRFeature *OGRAVCBinLayer::GetFeature( long nFID ){/* -------------------------------------------------------------------- *//*      If we haven't started yet, open the file now.                   *//* -------------------------------------------------------------------- */    if( hFile == NULL )    {        AVCE00ReadPtr psInfo = ((OGRAVCBinDataSource *) poDS)->GetInfo();        hFile = AVCBinReadOpen(psInfo->pszCoverPath,                                psSection->pszFilename,                                psInfo->eCoverType,                                psSection->eType,                               psInfo->psDBCSInfo);    }/* -------------------------------------------------------------------- *//*      Read the raw feature - the -3 fid is a special flag             *//*      indicating serial access.                                       *//* -------------------------------------------------------------------- */    void *pFeature;    if( nFID == -3 )    {        while( (pFeature = AVCBinReadNextObject( hFile )) != NULL               && !MatchesSpatialFilter( pFeature ) )        {            nNextFID++;        }    }    else    {        bNeedReset = TRUE;        pFeature = AVCBinReadObject( hFile, nFID );    }            if( pFeature == NULL )        return NULL;/* -------------------------------------------------------------------- *//*      Translate the feature.                                          *//* -------------------------------------------------------------------- */    OGRFeature *poFeature;    poFeature = TranslateFeature( pFeature );    if( poFeature == NULL )        return NULL;/* -------------------------------------------------------------------- *//*      LAB's we have to assign the FID to directly, since it           *//*      doesn't seem to be stored in the file structure.                *//* -------------------------------------------------------------------- */    if( psSection->eType == AVCFileLAB )    {        if( nFID == -3 )            poFeature->SetFID( nNextFID++ );        else            poFeature->SetFID( nFID );    }/* -------------------------------------------------------------------- *//*      If this is a polygon layer, try to assemble the arcs to form    *//*      the whole polygon geometry.                                     *//* -------------------------------------------------------------------- */    if( psSection->eType == AVCFilePAL         || psSection->eType == AVCFileRPL )        FormPolygonGeometry( poFeature, (AVCPal *) pFeature );/* -------------------------------------------------------------------- *//*      If we have an attribute table, append the attributes now.       *//* -------------------------------------------------------------------- */    AppendTableFields( poFeature );    return poFeature;}/************************************************************************//*                           GetNextFeature()                           *//************************************************************************/OGRFeature *OGRAVCBinLayer::GetNextFeature(){    if( bNeedReset )        ResetReading();    OGRFeature *poFeature = GetFeature( -3 );    // Skip universe polygon.    if( poFeature != NULL && poFeature->GetFID() == 1         && psSection->eType == AVCFilePAL )    {        OGRFeature::DestroyFeature( poFeature );        poFeature = GetFeature( -3 );    }    while( poFeature != NULL            && ((m_poAttrQuery != NULL                && !m_poAttrQuery->Evaluate( poFeature ) )               || !FilterGeometry( poFeature->GetGeometryRef() ) ) )    {        OGRFeature::DestroyFeature( poFeature );        poFeature = GetFeature( -3 );    }